Porsche numbering
 

When the 991 came out was it called the 991.1 or do they not start calling it that until a .2 version comes around? Was it originally just called 991?
Dont really no the history of how they do the numbering.

Correct - it was originally just the 991...

Interesting question. Do "they" refer to any of them as point two? Because I was under the impression that was all "we" not "they".

As another example, when the 981 came out it was and still is just referred to as a 981. They never made a 981.2 so there is no 981.1. The 718 came out and was designated the 982 but everyone calls it a 718. Weird.

While I can't speak specifically for the 991, official technical literature typically does not numerically distinguish pre- and post- mid-cycle-refresh (aka facelift) cars. They do distinguish by model year, engine type, drive type, and/or VIN sequence, and others.

991-originating parts are all going to have the prefix 991. Not 991A, 991.1, 991-1, 991-A, etc.

Porsche may internally use an alphanumeric suffix for the individual ordering code of the car. For example, the invoice code for a 1994 928 GTS manual is a 928-940.